The waiting time to check out of a supermarket has had a population mean of 10.28 minutes. Recently, in an effort to reduce the waiting time, the supermarket has experimented with a system in which there is a single waiting line with multiple checkout servers. A sample of 60 customers was selected, and their mean waiting time to check out was 9.26 minutes with a sample standard deviation of 5.1 minutes. Complete parts (a) through (d).

Question

What is the test statistics for this test?

The waiting time to check out of a supermarket has had a population mean of 10.28 minutes. Recently, in an effort to reduce the waiting time, the supermarket has experimented with
a system in which there is a single waiting line with multiple checkout servers. A sample of 60 customers was selected, and their mean waiting time to check out was 9.26 minutes
with a sample standard deviation of 5.1 minutes. Complete parts (a) through (d).
View transcribed image text
Expand
Expand

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: Given that the population standard deviation is 1, determine the minimum sample size needed in order...

A: Click to see the answer

Q: The Lion’sMane. In a study by P. M.West titled “The Lion’s Mane” (American Scientist, Vol. 93, No. 3...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: Oat Yield and Manure. In a classic study, described by F. Yates in The Design and Analysis of Factor...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: Interpreting a Graph The accompanying graph plots the numbers of points scored in each Super Bowl to...

A: Click to see the answer

Q: Suppose that a simple random sample is taken from a normal population having a standard deviation of...

A: Click to see the answer

Q: State the equation for the 95% confidence interval?

A: The equation for confidence interval can be stated as: Here x̅ is the sample mean, Zα/2 is the crit...

Q: What z-score values separate the middle 50% of the distribution from the rest of the scores?    -0....

A: Obtain the z-score values separate the middle 50% of the distribution from the rest of the scores. T...

Q: In each of Exercises, we have specified a margin of error, a confidence level, and a likely range fo...

A: Click to see the answer

Q: Explain what each symbol represents. a. Σ b. n c. x

A: Click to see the answer

Q: In a study of the relationship between alcohol use and bicycling fatalities, the researcher investig...

A: Click to see the answer

Q: A line can combine unites of inputs Cx) to produce processing units of output cy such trat there is ...

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...

Q: Interpreting r. In Exercises 5–8, use a significance level of α = 0.05 and refer to the accompanying...

A: The data shows the difference of weights between the discarded paper and glass from 62 different hou...

Q: A refrigerator contains 6 apples, 5 oranges, 10 bananas, 3 pears, 7 peaches, 11 plums, and 2 mangos....

A: It is given that a refrigerator contains 6 apples (A), 5 oranges (O), 10 bananas (B), 3 pears (Ps), ...

Q: A positive linear relationship between two variables means that one variable tends to increase linea...

A: Positive linearly correlation: If one variable increases, then the other variable also increases mea...

Q: Oxygen demand is a term biologists use to describe the oxygen needed by fish and other aquatic organ...

A: Consider X be a random variable that follows normal distribution indicates the oxygen demand in the ...

Q: answers to part 3 (a to d)

A: 3a) From the provided information, Sample size (n) = 100 Each question has 4 choices. Therefore, the...

Q: The data set has 80 observations and has mean 30 and standard deviation 5. Approximately how many ob...

A: Click to see the answer

Q: The following analysis was obtained using data in MEAP93, which contains school-level pass rates (as...

A: Click to see the answer

Q: Of which test is the Friedman test a nonparametric version?

A: Click to see the answer

Q: The number of orders that come into a mail-order sales office each month is normally distributed wit...

A: Obtain the standard z-score for the random variable equals 310 orders. The standard z-score for the ...

Q: Describe Correlation?

A: Correlation: Correlation it is a statistical measure, it measure the linear relationship between two...

Q: Answer true or false to each of the following statements and explain your answers. a. In a two-way A...

A: a) The interaction effect defines the effect of the variables that cannot be explained by individual...

Q: Answer true or false to each of the following statements and explain your answers. a. Prior knowledg...

A: Click to see the answer

Q: Bankers at a large financial institution created the linear regression model d = 0.37 – 0.0004s to p...

A: The given linear regression model is as follows: Where d predicts the proportion of customers who w...

Q: Job Satisfaction. A CNN/USA TODAY poll conducted by Gallup asked a sample of employed Americans the ...

A: The excel file summarizes the response and gender. The claim is to test whether the data provide suf...

Q: I don't know how to solve it.

A: Click to see the answer

Q: Birdies and Score. How important are birdies (a score of one under par on a given hole) in determini...

A: a. Error: The error is defined as e=y-hat−y where y-hat be the predicted value of the response varia...

Q: 3) Below are the ages of ten women who have been recognized for their social work: 43,44,45,48,53,56...

A: Click to see the answer

Q: In a complete factorial design, how do you determine the total number of treatment combinations?

A: Complete factorial designs: An experiment with the number of treatments is equal to the number of fa...

Q: In this section we introduced a descriptive measure of the utility of the multiple linear regression...

A: Click to see the answer

Q: Students at a particular university must be in exactly one of the class ranks: freshman, sophomore, ...

A: Given information- In university a particular students belongs to exactly one of the class ranks: Fr...

Q: Find  the following probability for a normal distribution Include the 0 before the decimal point and...

A: Obtain the probability of z less than 2.14. The probability of z less than 2.14 is obtained below:  

Q: Compute the standard error of the mean?

A: Click to see the answer

Q: Gender and Direction. In the paper “The Relation of Sex and Sense of Direction to Spatial Orientatio...

A: To decide whether two-standard deviations F-test can be used to compare the variation the histogram ...

Q: The head width (in) and weight (lb) is measured for a random sample of 20 bears.The data shows that ...

A: From the given information, Consider, Y = Weight (lb) which is a response variable and X = width (in...

Q: Working with Large Data SetsIn Exercises, use the technology of your choice to do the following task...

A: Click to see the answer

Q: Consider a hypothesis test for two population proportions with the null hypothesis H0: p1 = p2. What...

A: Click to see the answer

Q: Tennis Instant Replay The Hawk-Eye electronic system is used in tennis for displaying an instant rep...

A: In a recent U.S. Open, out of the 879 challenges players made, 231 challenges are successful. Also, ...

Q: Can you please help me answer and understand this problem? Thank you!

A: Given information- Sample size, n = 1000 Margin of error, E = 4.3% = 0.043

Q: the breaking of a particular rope is normally distributed, with the mean of 350 lbs. and a standard ...

A: Click to see the answer

Q: Regarding simple random sampling: a. What is simple random sampling? b. What is a simple random samp...

A: Click to see the answer

Q: To eliminate the effects of either the row or the column variables in a contingency table, a distrib...

A: To eliminate the effects of the row or the column variables in a contingency table, a Marginal distr...

Q: The following exercises are based on the following sample data consisting of numbers of enrolled stu...

A: Click to see the answer

Q: Could you please tell me how to complete this using a ti-84

A: a. The hypotheses are; This is a lower-tailed test. Here, difference, d = Actress – Actor

Q: Augusta National Golf Course. Earlier in this section, we found that the population mean length of t...

A: Parameter: Any statistical measure based on all units in the population is called Parameter. Statist...

Q: How Finite Population Correction (FPC) can be applied to the confidence interval formula?

A: Click to see the answer

Q: What is the level of significance? State the Null and alternative hypotheses. Will you use a left fi...

A: Level of significance: Level of significance is the probability of rejecting the null hypothesis H0,...

Q: I want part D from this question plz solve the part D

A: Independent events: If two events A and B are independent, then By this, The probability of “Republ...

Q: A box at a miniature golf course contains contains 9 red golf balls, 6 green golf balls, and 7 yello...

A: Given information- A box contains, 9 red, 6 green, and 7 yellow balls. So, total number of balls in ...

Q: An epidemiologist found five cases of “big toe cancer” in the Yukon Territory. Because there were on...

A: Click to see the answer

Transcribed Image Text

The waiting time to check out of a supermarket has had a population mean of 10.28 minutes. Recently, in an effort to reduce the waiting time, the supermarket has experimented with a system in which there is a single waiting line with multiple checkout servers. A sample of 60 customers was selected, and their mean waiting time to check out was 9.26 minutes with a sample standard deviation of 5.1 minutes. Complete parts (a) through (d).